From: ts Date: 2004-04-22T00:33:54+09:00 Subject: Re: Problems building ext/io/wait.c in 1.8 branch >>>>> "G" == Gavin Sinclair writes: G> $ ruby extconf.rb G> checking for FIONREAD... no G> checking for FIONREAD... no The Makefiule is created only if it find FIONREAD. See the content of extconf.rb Look in the include directories, if FIONREAD is defined in some file Guy Decoux